Showa Denko K.K. engages in the manufacture and sale of chemical products. It operates through the following segments: Petrochemicals, Chemicals, Electronics, Inorganics, Aluminum, and Others. The Petrochemicals segment produces and merchandises olefins and organic chemicals. The Chemicals segment manufactures and sells functional polymers, industrial gases, basic and electronic chemicals. The Electronics segment covers hard disks, compound semiconductors, and rare earth magnetic alloys. The Inorganics segment deals with graphite electrodes and ceramics. The Aluminum segment manufactures and sells rolled, extruded, forged products, heat exchangers and beverage cans. The Others segment produces and sells electronics and advanced battery materials. The company was founded on June 1, 1939 and is headquartered in Tokyo, Japan.